1188138038 has 16 divisors (see below), whose sum is σ = 1814261760. Its totient is φ = 583463400.

The previous prime is 1188138037. The next prime is 1188138073. The reversal of 1188138038 is 8308318811.

It is a junction number, because it is equal to n+sod(n) for n = 1188137986 and 1188138004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188138037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10493 + ... + 49863.

It is an arithmetic number, because the mean of its divisors is an integer number (113391360).

Almost surely, 2^1188138038 is an apocalyptic number.

1188138038 is a deficient number, since it is larger than the sum of its proper divisors (626123722).

1188138038 is a wasteful number, since it uses less digits than its factorization.

1188138038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39643.

The product of its (nonzero) digits is 36864, while the sum is 41.

The square root of 1188138038 is about 34469.3782653531. The cubic root of 1188138038 is about 1059.1455193983.

The spelling of 1188138038 in words is "one billion, one hundred eighty-eight million, one hundred thirty-eight thousand, thirty-eight".